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Evaporative Cooling for Energy Conservation
The evaporative cooling principle applies to all equipment that exchanges sensible heat for latent heat. Equipment of this type falls into two general categories: (1) equipment for heat rejection, such as cooling towers and (2) equipment for air cooling. A recent application of evaporative air cooling equipment in a heat treat area at the John Deere Component Works in Waterloo, Iowa provided the required cooling at an operating cost of 30% of a city water coil and 10% of a chilled water system. At the same time, the evaporative cooing system had the lowest first cost. Evaporative cooling equipment can be used for such things as reducing the maximum ambient temperatures of large electrical motors, increasing the output of gas turbine engines and lowering the operating cost of air-cooled refrigeration equipment. In addition, direct/indirect evaporative cooling systems can be used for indoor comfort cooling with substantial reduction in operating cost.
Meyer, J. R. (1983). Evaporative Cooling for Energy Conservation. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from